clinicaltrials.gov

https://clinicaltrials.gov· First analyzed 11 Feb 2026· Updated 11 Feb 2026

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clinicaltrials.gov

Mobile

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Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.107.134.59

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Envoy

Nameservers

ns-cloud-d3.googledomains.com.ns-cloud-d4.googledomains.com.ns-cloud-d2.googledomains.com.ns-cloud-d1.googledomains.com.

Performance

Page Speed

1.2 MB

96 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Google Cloud Platform

Detected API Sources

https://maps.googleapis.com/ma...

Technology Stack

8 Technologies Detected

Icon Libraries

Font Awesome Material Icons

Analytics

Frameworks

CSS Frameworks

Fonts

Tag Managers

SEO Analysis

D56/100

clinicaltrials.govclinicaltrials.gov

Home | ClinicalTrials.gov

ClinicalTrials.gov is a website and online database of clinical research studies and information about their results

Title Length25 chars

Recommended: 50-60 chars

Description Length116 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

5 issues found

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Security Score

46%Poor

Interactive

HTTPS

No WAF

173d

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

clear

cache-control

🔴 No Cache(no-cache,no-store, max-age=0, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

14666

content-type

text/html

Good Warning Issue

Typography & Readability

sans-serif

78/100

Readability

/30

40/40

16px · LH 1.62

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

sans-serif

Sans

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

~45 CPL

Needs attention

22px

16px

Minor Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.62 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

maps.googleapis.com(5)siteintercept.qualtrics.com(4)googletagmanager.com(3)dap.digitalgov.gov(2)cdn.ncbi.nlm.nih.gov(2)

Website Identity

clinicaltrials.gov

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Last analyzed: 11 Feb 2026 at 06:57

Historical Analysis & Change Tracking